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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Norwich Wire weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Expect a steadily warming trend through the coming days: highs climb from the mid-teens to around 20°C by midweek, with dry spells and patchy cloud dominating. The live forecast above shows a settled pattern, so you can plan outdoor activities with confidence for at least the next few days.
What’s the outlook for the next few days?
Daytime temperatures will rise from 15–17°C today to 19–21°C by Wednesday, accompanied by light south-westerly breezes. Overnight lows stay around 9–13°C, with clear spells giving way to increasing cloud later in the week. Rainfall is unlikely until Thursday evening at the earliest, making the next 48 hours the best window for trips or errands.
How will the week shape up?
By the weekend, a weak front may bring light drizzle but no significant disruption. For a broader view beyond this initial spell, check the 10 day weather forecast UK page. If you’re looking further ahead, the weather in Southampton 10 days from now suggests a return to cooler, more changeable conditions, though confidence is low beyond that. The 14 day weather forecast Southampton shows a typical autumn mix, and the 21 day weather forecast Southampton – while less reliable – hints at a shift to cooler nights from mid-month. For those planning ahead, weather in Southampton tomorrow remains dry with highs near 16°C, and the southampton weather forecast 15 days indicates no extreme temperatures expected.
Is it warm enough for a day out in Southampton this week?
Yes – daytime highs reach 19–21°C from Wednesday, with sunshine and light winds. Pack a light jacket for evenings when temperatures drop to around 10°C. The dry spell means you can enjoy parks or the waterfront without worrying about rain until late Thursday.
When does the next weather change arrive?
A weak front crosses the region late Thursday into Friday, bringing a small chance of drizzle. After that, the weekend looks mixed but mainly dry. For a longer view, the southampton weather by month page on our site gives typical averages to help seasonal planning.
What’s the long-term forecast looking like?
The southampton weather yearly trend shows October as a transition month, with average highs falling from 17°C early in the month to 13°C by late October. The 14 day weather forecast Southampton and 21 day weather forecast Southampton both point to a gradual cooling, with no sign of prolonged rain or gales.